Footing Calculator
Estimate concrete for trench footings
Estimate the concrete needed for continuous trench footings — the base that supports a foundation wall.
Estimate concrete for continuous trench footings. 10% waste is included for the "order" figure.
Cubic Feet
200.00
Cubic Yards
7.41
Order (10% waste)
8.15
cubic yards
How to Use This Calculator
- Enter the total trench perimeter in feet.
- Enter the footing width in inches.
- Enter the footing depth in inches.
- Review the cubic feet, cubic yards, and an order figure with 10% waste.
Why Use This Calculator?
- Estimating concrete for a footing pour.
- Comparing footing widths before deciding.
- Ordering ready-mix with a waste allowance.
Real-World Examples
120 ft perimeter, 20 in wide, 12 in deep
That's about 7.4 cubic yards of concrete, or roughly 8.2 yards including a 10% order allowance.
Frequently Asked Questions
How wide should a footing be?
Footing width and depth depend on the wall above, soil bearing capacity, and local code. Follow your engineer's design and building code.
Does this include rebar?
No. Many footings require reinforcement per code; that's a separate estimate from the concrete volume.
What's the 10% waste figure?
A built-in allowance for over-excavation, uneven trench bottoms, and spillage so you order enough ready-mix.
Important Disclaimer
Estimates only. Footing dimensions and reinforcement must follow engineering and local building code. Verify requirements before ordering or pouring.
Privacy
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